barcodelib c# 7: Securing Web Browsers and E-mail in Objective-C

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CHAPTER 7: Securing Web Browsers and E-mail
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likely notice that nearly all the plug-ins are Apple-related (for example, related to QuickTime or iPhoto). If you notice a browser plug-in that you suspect is dangerous, navigate to the /Library/Internet Plug-Ins folder in your user folder and delete it. NOTE: Some older third party plug-ins, such as the Shockwave plug-in, are already integrated into Safari. Safari can also protect against the installation of unwanted software. When you download new software through Safari and try to run it for the first time, you will receive a message alerting you that the software is an application downloaded from the Internet. You ll also be asked whether you re sure you want to open it. You can click Cancel here, which will stop the software from being opened. One of the most dangerous things you can do on your computer is to allow rogue software applications to be installed. Pay attention to this window, as this feature (only available on Leopard and Snow Leopard) will help you protect against unsolicited software being installed on your system. For more on Malware, see 8. You can also see our article at www.afp548.com/article.php story=20090826235425679 for a little more information on the built-in malware safeguards in Mac OS X.
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Clearing out all of the caches, history, downloads, and cookies on your system keeps prying eyes from finding them. However, this can be annoying, because it may require you to re-enter passwords for some sites, which, if you re like the rest of us, you may have forgotten. Clearing this information will also reset the history information, thus clearing out your auto-complete functionality for recently visited and non-bookmarked web sites. For security best-practices, clearing all the information is not necessary. Luckily, Safari gives us the option to be selective about what information we clear. You can reset Safari at any time by selecting the Reset Safari option in the Apple menu. You ll be presented with a menu of options to clear. (See Figure 7 3.) When clearing Mac web browsers of sensitive data, we prefer to check off the following: Clear history Remove all web page preview images Empty the cache Clear the Downloads window Remove all web site icons Close all Safari windows
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CHAPTER 7: Securing Web Browsers and E-mail
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Figure 7 3. Reset Safari options
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If you are a network administrator in charge of your company s web browser security, there is a handy free utility called the Safari Toolkit (available at MacFixit.com amongst other download sites) that will allow you to not only customize the look and feel of Safari, but also to secure the browser for individual users. If, in customizing the browser, you decide to remove any buttons that might affect security, consider setting the security options before removing those buttons. NOTE: If you are on a corporate network and you notice differences between our web browser screens and your own, your company may have a custom configured Safari installation. It can t hurt to ask your network administrator how your Safari preferences are configured.
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Securing Firefox
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Firefox is a free, cross-platform, graphical web browser developed by the Mozilla Foundation with contributions from thousands of volunteers all over the world. Before its 1.0 release on November 9, 2004, Firefox had already garnered a great deal of acclaim
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CHAPTER 7: Securing Web Browsers and E-mail
from numerous media outlets, including Forbes and the Wall Street Journal. Now in version 3.6, Firefox has become more widely used than almost any other browser on the market, in large part because of the security features built into it (and because it isn t a hacker-targeted Microsoft product). For example, Figure 7 4 displays the rather powerful encryption features found in Firefox features you re hard-pressed to find as easily configurable in other web browsers.
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